5 reasons to not use SUV's for off-road  In my previous advice I have explained: How to choose a capable off-road car? based on low range, ABS and Diff-locks. In this advice I will explain why SUV’s and crossovers do not make good, capable off road vehicles. The SUV’s / crossovers have serious design flaws (or differences) that make them unsuitable as off road vehicles. Below are the 5 points that will make this class of vehicle unsuitable as off road vehicles.